In the hot gases of an automotive engine's cylinders, temperatures may exceed 1142 K (degrees kelvin).  What would be the "root mean square" or "rms" velocity of a hydrogen atom, if one happened to be in that gas after some chemical reaction?  The mass of a hydrogen atom is about 1 AMU, or  1.66x10-27 kg.  Give your answer in meters per second (m/s).

Q: Which of the following is NOT true about Hess's Law? A. If an equation is reversed, the sign of En...

A: The Hess's law the total enthalpy change of a complete chemical reaction is the same regardless of t...

Q: The metal niobium crystallizes in a body-centered cubic lattice. If the density of niobium is 8.57 g...

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Q: The equilibrium constant is equal to 5.00 at 1300 K for the reaction: 2 SO2(g) + O2(g) =2 SO3(g) If ...

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Q: A Moving to another question will save this response. Question 4 Calculate the pH of a 0.0927 M solu...

A: Given, Concentration of the pyridine solution (C) = 0.0927 M Kb for pyridine (C5H5N) = 1.7 × 10-9 pH...

Q: Draw a heating curve when octane, a component of gasoline, is warmed from -70 °C to 130 °C. It has a...

A: A heating curve is a graphical representation of the phase transition that a material undergoes when...

Q: Calculate the value of AH for the reaction: 3 Fe (s) + 4 H20 (g) Fe304 (s) + 4 H2 (g) Fe (s) + H20 (...

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Q: Which of the following shows the changes as well as the mass relationship? A. Thermal energy B. Th...

A: Thermal energy is the energy produced dur to motion of particles. So, as the intermolecular forces o...

Q: Use the References to access important values if needed for this question. Use unit analysis to show...

A: The density, of a substance is its mass per unit volume. It is usually represented by symbol ρ (rho)...

Q: Question 19 A solution of 4.561 M B is 5.476% ionized at 25°C. What is the Kp for this base? Linh 7 ...

A: Concentration of base, B = 4.561 M Degree of ionization = 5.476%   The question requires to calculat...

Q: mL Alcohol 85% ad 240 mL Sig. For the scalp. How milliliters each of 95% v/v alcohol and water shoul...

A: The questions asks the volume of alcohol and water to be mixed in order to prepare 240 ml of 85% alc...

Q: Visited The illustration to the left represents a mixture of nitrogen ( blue ) and oxygen ( red) mol...

A: Complete solution is given below in next step

Q: Question 18 Calculate the pH of a 0.0999 M solution of pyridine (C5H5N; Kb = 1.7 x 10-9) (the answer...

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Q: Calculate the density of (101) of Ag.

A: Relative density of silver (Ag) = 10.8 Density of water = 1000kg/m3  

Q: The cell notation for the Galvanic cell is              A(s)/A2+//B2(s)/B- The Standard Reduction ...

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Q: In a FRET experiment designed to monitor conformational changes in T4 lysozyme, the fluorescence int...

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Q: 1. Give the IUPAс пате of the following compounds: (al DI HyC=CHCHCCH, CHyCH;CH- CH,CH, (c) (d) CH,C...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: y milliliters o

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Q: Given 60.00 g of the compound in 60.00 mL water. Calculate amount extracted using multiple (2 x 50.0...

A: Concept- In a multiple extraction procedure, a quantity of solvent is used to extract one layer mult...

Q: What is the purpose of the acetic acid experiment?

A: We have to discuss about the purpose of acetic acid experiment.

Q: Place these in order of most likely to remain reactants (and not proceed to products), where 1 is le...

A: Equilibrium is a condition at which the concentration of reactants and products remains constant ove...

Q: Consider the reaction: CD   C2+ + B2-; Ksp = 2.4 x 10-8 What is ΔG° at 25 °C?     87.2 kJ/mol   ...

A: Given,  Ksp = 2.4 x 10-8 Temperature, T = 25 °C = (25+273) = 298 K   

Q: Gaseous ethane (CH,CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,) ...

A: Complete solution is given below in next step 

Q: What are the tissue sources of Alkaline phosphatase? 2.  What are Regan and Nagao isoenzymes?

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Q: What is the cell potential for the following reaction at 298.15 K?  Y(s) + Z2+(0.010 M) → Y2+(0.001...

A: To calculate the cell potential, we have to first calculate the standard cell potential.  E° = Ered ...

Q: gas in the ratio 1:3 by volume is heated at a temperature of 450-5000C and 200-900 atmospheric press...

A: Rate of this reaction is -d[N2]/dt=-(1/3)d[H2]/dt=(1/2)d[NH3]/dt Reactant is decreases with time so ...

Q: You have a test tube containing a mixture of Ag+, Fe3+, and Ba2+. Make a diagram similar to Expt. 1 ...

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Q: In any cubic lattice an atom lying at the corner of a unit cell is shared equally by how many unit c...

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Q: D. Mass Spectrum 120 55 100 80 60 28 84 41 40 56 27 39 20 42 26 37 38 36 40 43 48 49 50 51 s, 53 54 ...

A: Mass spectrum is the technique used in analytical chemistry for the separation of ions based on the ...

Q: How many milliliters of a 100 mg/ml e Sig. As directed. How many milliliters of a 100 mg/m ph concen...

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Q: Question 13 How many electrons would an atom of palladium (Pd) have if it has a charge of +3? - Prev...

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Q: When writing the Kc expression for the equilibrium below, which of the following terms (with proper ...

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Q: Explain synthesis of nanomaterial (Top and Bottom)?

A: Answer - Nanomaterial - According to the question - Nanomaterials can be defined as materials posses...

Q: What volume of methane (CH4) is required to react with 167 liters of carbon tetrachloride according ...

A: One mole of methane react one mole of catbon tetrachloride and produced two mole CH2Cl2

Q: Water is a _____ solvent for HClO4, HCl, and nitric acids because all three are completely ionized i...

A: HClO4, HCl, and nitric acids are strong acids in an aqueous solution, and they dissociate completely...

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Q: Calculate the value of AH° for the reaction. 2 H2S (g) + 3 02 (g) > 2 H2O (1) + 2 SO2 (g) AH°F H2S (...

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Q: IV. Fill up the numbered spaces (only) in the table below. Type your answer for the functional group...

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Q: In the reaction. HCO3 (aq) + HPO42- (aq) = H2CO3 (aq) + PO43- (aq) the conjugate acid-base pairs are...

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Q: What is the Miller index in the lattice direction that may be placed on the lattice plane (112) amon...

A: Miller index for plane (112) Is (111/2).

Q: A titrant of 1.0 M K2Cr2O7 was used for titration of 30 mL aqueous ethanol C2H6O solution and consum...

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Q: II. Answer the following items as required. A. (a) overlapping of orbitals (b) bond axis & electron ...

A: The answer is as follows:  

Q: (4 blanks) An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 °C and ...

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Q: Enter your answer in the provided box. Sodium carbonate (Na,CO3) is available in very pure form and ...

A: Mass of Na2CO3 = 0.266 g  Molar mass of Na2CO3 = 106 g /mol  Volume of HCl = 25.3 mL = 0.0253 L  Mol...

Q: History of Cosmetics

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Q: A Moving to another question will save this response. Question 11 What is the pH for a solution at 2...

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Q: What is the conjugate base of H3PO4? O A. H2PO42- O B HPO42- В. O C. OH OD.PO43- E H2PO4

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Q: Classify each of these exchange reactions as an acid-base reaction, a precipitation reaction, or a g...

A: Given incomplete chemical equations are : (a). MnCl2 (aq) + Na2S (aq) ------>  (b). Na2CO3 (aq) +...

Q: Why does crushing a solid cause it to dissolve faster?

A: Given question is :  Why does crushing a solid cause it to dissolve faster = ?   

Q: What volume of methane (CH4) is required to react with 110 liters of carbon tetrachloride according ...

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.